US 12,218,176 B2
Light emitting element and display device comprising same
Young Rag Do, Seoul (KR); and Hoo Keun Park, Cheongju-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Appl. No. 17/423,450
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-Si (KR)
PCT Filed Nov. 25, 2019, PCT No. PCT/KR2019/016244
§ 371(c)(1), (2) Date Jul. 15, 2021,
PCT Pub. No. WO2020/149512, PCT Pub. Date Jul. 23, 2020.
Claims priority of application No. 10-2019-0005426 (KR), filed on Jan. 15, 2019.
Prior Publication US 2022/0069005 A1, Mar. 3, 2022
Int. Cl. H01L 27/15 (2006.01); H01L 33/24 (2010.01); H01L 33/38 (2010.01); H01L 33/44 (2010.01); H01L 33/58 (2010.01)
CPC H01L 27/156 (2013.01) [H01L 33/24 (2013.01); H01L 33/38 (2013.01); H01L 33/44 (2013.01); H01L 33/58 (2013.01); H01L 2933/0091 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A light emitting element comprising:
a first conductivity type semiconductor doped with a dopant having a first polarity;
a second conductivity type semiconductor doped with a dopant having a second polarity opposite to the first polarity;
an active layer between the first conductivity type semiconductor and the second conductivity type semiconductor; and
an insulation film which surrounds at least a side surface of the active layer;
wherein the insulation film comprises an insulation coating film and at least one light conversion particle on at least a portion of the insulation coating film,
wherein a particle area is defined as an area in which the at least one light conversion particle is on the insulation coating film,
wherein the particle area is on the insulation coating film to overlap at least the active layer, and
wherein a ratio of the particle area to an area of an outer surface of the insulation coating film is in a range from 0.5 to 0.6.